This paper deals with the effect on resistance of hull roughnesses, including the effect of structural roughnesses on all-riveted and all-welded shells and of paint and other local roughnesses which frequently occur.

    It is shown that the calculated reduction in resistance due to the elimination of structural roughnesses is in good agreement with conclusions based on ship trial data.

    The paper also shows the marked variation in the effect of structural roughness on large ships compared with small ships and suggests that the modern flush-welded ship with a good paint finish on top of clean bare steel will have a resistance considerably above that of a perfectly smooth surface.


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    Title :

    The effect of roughness on ship resistance12


    Contributors:
    Allan, J.F. (author) / Cutland, R.S. (author)

    Published in:

    Publication date :

    1958-05-01


    Size :

    12 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Effect of roughness on ship resistance

    Allan, J.F. / Cutland, R.S. | Engineering Index Backfile | 1956


    Effect of roughness on ship resistance

    Allan, J.F. / Cutland, R.S. | Engineering Index Backfile | 1958


    Effect of roughness on ship resistance

    Allan, J.F. / Cutland, R.S. | Engineering Index Backfile | 1956


    Influence of roughness on ship resistance

    Kempf, G. | Engineering Index Backfile | 1937


    Influence of roughness on ship resistance

    Kempf, G. | Engineering Index Backfile | 1937